fix(nginx): Increase server_names_hash_bucket_size to 128

[nfebe]

Long domain names (e.g., auto-generated subdomains) can exceed the default bucket size of 64, causing nginx config test to fail with:

[emerg] could not build server_names_hash, you should increase
server_names_hash_bucket_size: 64

Increasing to 128 accommodates longer domain names.

[sourceant]

Code Review Summary

✨ This pull request primarily standardizes the server_names_hash_bucket_size directive across several Nginx configuration files, which is a good practice for preventing issues with server name processing. However, a potentially impactful change in templates/infra/nginx/nginx.conf needs attention regarding network performance.

🚀 Key Improvements

• Standardization of server_names_hash_bucket_size 128; across multiple Nginx configurations (templates/infra/nginx/nginx.conf, test/e2e/nginx/lua/nginx.conf, test/e2e/nginx/nginx.conf, test/e2e/nginx/security/nginx.conf). This helps prevent hash table overflow issues with a large number of server names.

💡 Minor Suggestions

• Consider adding tcp_nodelay on; back into templates/infra/nginx/nginx.conf for optimal network performance, especially for interactive content or APIs.

🚨 Critical Issues

• The removal of tcp_nodelay on; in templates/infra/nginx/nginx.conf may subtly degrade network performance by reintroducing Nagle's algorithm, potentially increasing latency for small data packets. It's recommended to reinstate this directive.

[sourceant]

Review complete. No specific code suggestions were generated. See the overview comment for a summary.

[sourceant]

Review complete. See the overview comment for a summary.